What I do - hit F5 in libre impress with ppt file open

What do I expect:
The first slide of the ppt.

What happens:
Libre office just dims, and when I hit alt-tab, I see another(second) instance of Impress running. I suppose this is where the powepoint should be.

My laptop : Ubuntu 11.10 with unity 2d. Unity not supported. hardware video - intel 855( not supporting opengl 1.4)

o I have to install something else to make it run correctly. Or this is just a bug?